<template>
  <div class="rank" ref="rank">
    <scroll :data="topList" class="toplist" ref="toplist">
      <ul>
        <li @click="selectItem(item)" class="item" v-for="item in topList">
          <div class="icon">
            <img width="100" height="100" v-lazy="item.picUrl"/>
          </div>
          <ul class="songlist">
            <li class="song" v-for="(song,index) in item.songList">
              <span>{{index+1}}</span>
              <span>{{song.songname}}-{{song.singername}}</span>
            </li>
          </ul>
        </li>
      </ul>
      <div class="loading-container" v-show="!topList.length">
        <loading></loading>
      </div>
    </scroll>
    <router-view></router-view>
  </div>

</template>

<script type="text/ecmascript-6">
  import Scroll from '../../base/scroll/scroll.vue';
  import Loading from '../../base/loading/loading.vue';
  import {ERR_OK} from '../../api/config';
  import {playlistMixin} from '../../common/js/mixin';
  import {mapMutations} from 'vuex';
  import {getTopList} from '../../api/rank';

  export default {
    mixins:[playlistMixin],
    created(){
      this._getTopList();
    },
    data(){
      return {
          topList:[]
      }
    },
    methods:{
        handlePlaylist(playlist){
          const bottom = playlist.length > 0 ? '60px' : '';
          this.$refs.rank.style.bottom=bottom;
          this.$refs.toplist.refresh();
        },
      selectItem(item){
        this.$router.push({
          path:`/rank/${item.id}`
        })
        this.setTopList(item);
      },
      _getTopList(){
          getTopList().then((res)=>{
              if(res.code===ERR_OK){
                  this.topList=res.data.topList
              }
          })
      },
      ...mapMutations({
        setTopList:'SET_TOP_LIST'
      })
    },
    watch:{

    },
    components:{
        Scroll,
        Loading
    }
  }
</script>

<!--scoped实现私有化样式-->
<style scoped lang="stylus" rel="stylesheet/stylus">
  @import "~common/stylus/variable"
  @import "~common/stylus/mixin"

  .rank
    position: fixed
    width: 100%
    top: 88px
    bottom: 0
    .toplist
      height: 100%
      overflow: hidden
      .item
        display: flex
        margin: 0 20px
        padding-top: 20px
        height: 100px
        &:last-child
          padding-bottom: 20px
        .icon
          flex: 0 0 100px
          width: 100px
          height: 100px
        .songlist
          flex: 1
          display: flex
          flex-direction: column
          justify-content: center
          padding: 0 20px
          height: 100px
          overflow: hidden
          background: $color-highlight-background
          color: $color-text-d
          font-size: $font-size-small
          .song
            no-wrap()
            line-height: 26px
      .loading-container
        position: absolute
        width: 100%
        top: 50%
        transform: translateY(-50%)
</style>
